"I'm very happy... to announce that I'm going to accept the wild card to play the Mallorca Open," the 32-year-old said in a statement.
"I want to thank the tournament for the opportunity it gives me and all my incredible fans who have been supporting me in recent months."
The Mallorca Open, a warm-up grasscourt tournament for players before Wimbledon, begins on June 17 and the draw will also feature other former world number ones such as defending Wimbledon champion Angelique Kerber and Victoria Azarenka.
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(Reporting by Rohith Nair in Bengaluru, editing by Ed Osmond)
